Repository of problems worth solving
World Solve is a public institutional repository for identifying real unresolved problems across science, society, health, governance, economics, and local systems. Each entry is intended to be citable, inspectable, and actionable.
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4194Total
4194Open
0Solved
9Humans
open
Global / Unspecified, Global
Collecting samples from Venus or deep Martian canyons requires multi-stage rockets launching autonomously from foreign surfaces. Lightweight planetary ascent vehicles and automated orbital rendezvous systems must be built.
science-space
global-unspecified
systems
planetary
lack
autonomous
sample
return
missions
high-gravity
worlds
collecting
society-governance
technology-computing
climate-environment
economics-resources
ensuring
public
open
Global / Unspecified, Global
While ion drives are fuel-efficient, their low thrust-to-weight ratio means orbital transfers take months or years. High-power, magnetoplasmadynamic thrusters operating at the multi-kilowatt level are needed.
health-biology
global-unspecified
ion
thrusters
low
orbital
electric
generate
thrust
making
unsuitable
rapid
debris
space
poses
exponential
science-space
open
Global / Unspecified, Global
UHECR particles carry millions of times more energy than Earth's particle accelerators can generate. Identifying their origins requires large space-based cosmic ray detection arrays scanning the atmosphere.
science-space
global-unspecified
cosmic
source
mechanisms
generating
ultra-high-energy
rays
uhecrs
unidentified
uhecr
particles
know
explain
ray
lack
high
open
Global / Unspecified, Global
Standard lithium-ion batteries lose efficiency and fail at sub-zero temperatures without dedicated thermal heaters. Development of solid-state or low-temperature tolerant electrolyte batteries is essential for planetary night survival.
science-space
global-unspecified
batteries
temperatures
lack
low-mass
high-capacity
suitable
extreme
cold
deep
space
climate-environment
haven
electric
recycling
solved
vehicle
open
Global / Unspecified, Global
Solar-powered stratospheric drones designed for continuous Earth observation fail to survive long winter nights due to payload weight. Breakthrough high energy-density batteries and ultra-light solar wings are needed.
science-space
global-unspecified
commercial
high-altitude
pseudo-satellites
haps
face
severe
battery
density
limitations
solar-powered
climate-environment
solar
high
efficiency
cells
radiation
open
Global / Unspecified, Global
ZBLAN optical fibers produced in space exhibit far lower light attenuation than Earth-made fibers, but manufacturing defect rates remain high. Microgravity fluid dynamics and draw-tower controls must be perfected.
science-space
global-unspecified
fibers
manufacturing
optical
microgravity
lack
precise
affordable
techniques
zero-defect
zblan
construction
housing
reducing
social-civic-problems
space
must
open
Global / Unspecified, Global
Solar flares release massive kinetic and radiation energy, disrupting global High-Frequency radio and GPS signals. Micro-scale magnetic reconnection models are needed to predict flares hours before they burst.
climate-environment
global-unspecified
flares
solar
release
exact
physical
trigger
explosive
coronal
plasma
unconfirmed
science-space
haven
whether
fully
reliably
predict
open
Global / Unspecified, Global
Surface landers face pressures of 90 atmospheres and temperatures near 460°C, melting silicon microelectronics. High-temperature silicon carbide electronics and mechanical computing landers are required.
health-biology
global-unspecified
surface
venus
atmospheric
probes
fail
hours
due
extreme
heat
corrosive
density
entry
atmosphere
high
science-space
urban
open
Global / Unspecified, Global
Methane detected in Mars' atmosphere could indicate ongoing biological activity or sub-surface geological serpentinization. Isotopic measurement instruments with high sensitivity are needed to trace the true source.
mathematics-logic
global-unspecified
source
methane
mars
exact
seasonal
fluctuations
spikes
unexplained
detected
atmosphere
climate-environment
emissions
high
industrial
cannot
reliably
open
Global / Unspecified, Global
Thickening Mars' atmosphere or cooling Venus requires releasing greenhouse gases or solar shades on a planetary scale. Advanced bio-engineered extremophiles or orbital mirror swarms must be modeled and tested.
climate-environment
global-unspecified
have
proven
operational
mechanism
planetary-scale
atmospheric
terraforming
thickening
mars
atmosphere
science-space
lack
planetary
high
solar
systems
open
Global / Unspecified, Global
Earth's shifting atmosphere blurs astronomical imagery, requiring expensive adaptive optics systems with limited fields of view. Next-generation artificial laser guide star arrays and photonic lanterns are needed.
science-space
global-unspecified
ground-based
telescopes
suffer
atmospheric
turbulence
limits
angular
resolution
earth
shifting
high
density
entry
atmosphere
ground
optical
open
Global / Unspecified, Global
The boom in commercial satellite constellations on Earth causes RF noise that bleeds into planetary science frequency bands. Strict international spectrum carving and transition to optical laser links are necessary.
science-space
global-unspecified
frequency
spectrum
bands
radio
congestion
threatens
deep
space
telemetry
transmission
optical
laser
satellite
high
lack
communication
open
Global / Unspecified, Global
Energetic protons and electrons in Earth's Van Allen belts degrade standard solar panel efficiency over time. Radiation-hardened perovskite-on-silicon tandem solar cells are needed to maintain high power-to-weight ratios.
climate-environment
global-unspecified
solar
cells
lack
ultra-lightweight
high-efficiency
resistant
orbital
radiation
degradation
energetic
science-space
whether
power
haven
small
mathematics-logic
open
Global / Unspecified, Global
Frequent commercial launches risk disrupting the ozone layer and altering upper-atmosphere global thermal dynamics. Clean-burning propellants like methalox or hydrogen-based engines must be evaluated for environmental impact.
climate-environment
global-unspecified
launches
high-altitude
rocket
deposit
light-absorbing
black
carbon
directly
stratosphere
frequent
frequency
hole
cannot
science-space
open
Global / Unspecified, Global
Capturing dead satellites or space debris requires catching uncontrolled objects without causing collision fragments. Advanced computer vision, robotic capture arms, and net-based soft capture systems are required.
science-space
global-unspecified
space
objects
autonomous
docking
between
non-cooperative
tumbling
remains
high
risk
systems
society-governance
designs
governance
whether
philosophy-ethics
open
Global / Unspecified, Global
Converting Mars' 95% CO2 atmosphere into plastics, methane, and industrial reagents requires complex catalysts that foul quickly. High-efficiency solid oxide electrolysis systems optimized for dirty ambient gas are needed.
climate-environment
global-unspecified
industrial
cannot
reliably
synthesize
high-purity
chemicals
martian
atmospheric
carbon
dioxide
methane
systems
society-governance
fast
growing
high
open
Global / Unspecified, Global
The solar magnetic dynamo flip drives the solar activity cycle, but we cannot accurately predict cycle strength decades in advance. High-resolution solar interior magnetohydrodynamic models are required.
climate-environment
global-unspecified
magnetic
solar
not
have
comprehensive
model
explaining
periodic
reversal
sun
whether
science-space
haven
philosophy-ethics
mathematics-logic
know
open
Global / Unspecified, Global
While optical communication offers high bandwidth, cloud cover blocks laser signals from deep space probes to Earth ground stations. Dynamically routed global ground-station networks and satellite relays are needed.
science-space
global-unspecified
optical
laser
ground
stations
cloud
cover
severely
degraded
atmospheric
weather
technology-computing
space
satellite
whether
earth
radio
open
Global / Unspecified, Global
Objects originating from outside our solar system pass through at extreme hyperbolic velocities with minimal discovery lead-time. High-delta-v interceptor platforms on standby in deep space orbits are required for defense.
science-space
global-unspecified
defense
objects
lack
operational
planetary
mechanism
deflect
large
fast-moving
interstellar
climate-environment
space
high
autonomous
docking
Seasonal crop burning, industrial emissions, and vehicle exhaust generate high concentrations of PM2.5 across the Indo-Gangetic Plain, shaving years off average life expectancy without unified cross-border environmental governance.
climate-environment
asia
nepal
air-pollution
haven
effectively
mitigated
life-shortening
particulate
air
pollution
major
south
asian
global-unspecified
quality
urban
african